mail: Add the option of only running hooks without updating

* mail.el (durand-mail-update): Now if we run the update command with
  the argument of `0', then it only runs the hook
  `durand-mail-update-hook`, which currently contains only the
  function `notmuch-poll`.  This allows the user to index mails
  without fetching mails, which is useful since the timer that fetches
  mails in the background does not index mails, intentionally.

1 files changed, 28 insertions, 13 deletions

diff --git a/mail.el b/mail.el
index ed2dd00..57d680f 100644
--- a/mail.el
+++ b/mail.el
@@ -290,19 +290,34 @@ PROCESS is finished."
 (defun durand-mail-update (&optional foreground-p)
   "Update mails.
 If FOREGROUND-P is non-nil, also display the progress in a
-separate buffer."
-  (interactive (list t))
-  (make-process
-   :name "durand-mail-update"
-   :command durand-mail-update-command
-   :filter (cond (foreground-p #'durand-mail-update-filter))
-   :sentinel (cond (foreground-p #'durand-mail-update-sentinel))
-   :buffer (cond
-            (foreground-p
-             (let ((buffer
-                    (get-buffer-create durand-mail-update-buffer)))
-               (buffer-disable-undo buffer)
-               buffer)))))
+separate buffer.
+
+If FOREGROUND-P is `0', do not fetch mails, but just run
+`durand-mail-update-hook.'"
+  (interactive
+   (list
+    (let ((arg current-prefix-arg))
+      (cond
+       ((and (numberp arg)
+             (= arg 0))
+        0)
+       ((null arg))))))
+  (cond
+   ((and (numberp foreground-p)
+         (= foreground-p 0))
+    (message "hi")
+    (run-hooks 'durand-mail-update-hook))
+   ((make-process
+     :name "durand-mail-update"
+     :command durand-mail-update-command
+     :filter (cond (foreground-p #'durand-mail-update-filter))
+     :sentinel (cond (foreground-p #'durand-mail-update-sentinel))
+     :buffer (cond
+              (foreground-p
+               (let ((buffer
+                      (get-buffer-create durand-mail-update-buffer)))
+                 (buffer-disable-undo buffer)
+                 buffer)))))))
 
 (defvar durand-mail-update-timer nil
   "A timer to automatically update mail in the background.")